Need to hide pivot column if it is first change from previous

I have a pivot with 2 months of data. current and prior. I added show value fields as % change of previous month but the columns appear for both the current and prior month with prior month all blank.

We only want the change columns at the end of the report since the 1st month will never have a previous to compare to. In my example I need to disable columns E & F.

If I hide columns and user pivots other fields, the columns will change

How can this be accomplished? Seems like it should easy.

Thanks